GR Yaris (Gen 2) GR Yaris Mk2 (MY2024->)

Its not an uncommon thing. I'd take the pads out, inspect and lightly capmpher the edge of the material with a metal file. I use high temp copper grease on the retaining pin.

You could always just report it to the dealer If under warranty. I suspect that hard use of the brakes would eventually get rid of the noise.
The copper grease is located where the plate is behind the pads? Do you think it's enough to smooth the edges?
 
I didn't realize the stock brakes in Mk2 are so huge - according the press kit they're 18'' front and 16'' rear, and built from aluminum!

Ventilated disk (18-inch aluminum, opposed 4-pot calipers)
Ventilated disk (16-inch aluminum, opposed 2-pot calipers)

 
Hey y'all did you check the last versión of the newest edition of the GR Yaris?! Looks stunning and practical for daily driving 😜👌🤣
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